Why? Your min wonders by speculation anything else is possible and your brain navigates self evidently alive evolving with each heartbeat never same results again working the same way in series parallel events everything else universally present same time you exist as an eternally changing total sum conceive to dead only debating life cradle to grave and species exists only by current reproductions living forward daily never same total sum as previously lived day in until day out.
So many years between. History doesn't record your every breath, but society governs your every movement socially.